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/*
* Atheros AR934X SoCs built-in NAND flash controller support
*
* Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/dma-mapping.h>
#include <linux/etherdevice.h>
#include <linux/platform_device.h>
#include <linux/platform/ar934x_nfc.h>
#include <asm/mach-ath79/ath79.h>
#include <asm/mach-ath79/ar71xx_regs.h>
#include "dev-nfc.h"
static struct resource ath79_nfc_resources[2];
static u64 ar934x_nfc_dmamask = DMA_BIT_MASK(32);
static struct ar934x_nfc_platform_data ath79_nfc_data;
static struct platform_device ath79_nfc_device = {
.name = AR934X_NFC_DRIVER_NAME,
.id = -1,
.resource = ath79_nfc_resources,
.num_resources = ARRAY_SIZE(ath79_nfc_resources),
.dev = {
.dma_mask = &ar934x_nfc_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
.platform_data = &ath79_nfc_data,
},
};
static void __init ath79_nfc_init_resource(struct resource res[2],
unsigned long base,
unsigned long size,
int irq)
{
memset(res, 0, sizeof(res));
res[0].flags = IORESOURCE_MEM;
res[0].start = base;
res[0].end = base + size - 1;
res[1].flags = IORESOURCE_IRQ;
res[1].start = irq;
res[1].end = irq;
}
static void ar934x_nfc_hw_reset(bool active)
{
if (active) {
ath79_device_reset_set(AR934X_RESET_NANDF);
udelay(100);
ath79_device_reset_set(AR934X_RESET_ETH_SWITCH_ANALOG);
udelay(250);
} else {
ath79_device_reset_clear(AR934X_RESET_ETH_SWITCH_ANALOG);
udelay(250);
ath79_device_reset_clear(AR934X_RESET_NANDF);
udelay(100);
}
}
static void ar934x_nfc_setup(void)
{
ath79_nfc_data.hw_reset = ar934x_nfc_hw_reset;
ath79_nfc_init_resource(ath79_nfc_resources,
AR934X_NFC_BASE, AR934X_NFC_SIZE,
ATH79_MISC_IRQ(21));
platform_device_register(&ath79_nfc_device);
}
static void qca955x_nfc_hw_reset(bool active)
{
if (active) {
ath79_device_reset_set(QCA955X_RESET_NANDF);
udelay(250);
} else {
ath79_device_reset_clear(QCA955X_RESET_NANDF);
udelay(100);
}
}
static void qca955x_nfc_setup(void)
{
ath79_nfc_data.hw_reset = qca955x_nfc_hw_reset;
ath79_nfc_init_resource(ath79_nfc_resources,
QCA955X_NFC_BASE, QCA955X_NFC_SIZE,
ATH79_MISC_IRQ(21));
platform_device_register(&ath79_nfc_device);
}
void __init ath79_nfc_set_select_chip(void (*f)(int chip_no))
{
ath79_nfc_data.select_chip = f;
}
void __init ath79_nfc_set_scan_fixup(int (*f)(struct mtd_info *mtd))
{
ath79_nfc_data.scan_fixup = f;
}
void __init ath79_nfc_set_swap_dma(bool enable)
{
ath79_nfc_data.swap_dma = enable;
}
void __init ath79_nfc_set_ecc_mode(enum ar934x_nfc_ecc_mode mode)
{
ath79_nfc_data.ecc_mode = mode;
}
void __init ath79_nfc_set_parts(struct mtd_partition *parts, int nr_parts)
{
ath79_nfc_data.parts = parts;
ath79_nfc_data.nr_parts = nr_parts;
}
void __init ath79_register_nfc(void)
{
if (soc_is_ar934x())
ar934x_nfc_setup();
else if (soc_is_qca955x())
qca955x_nfc_setup();
else
BUG();
}
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